I need a junk MAP sensor

[falconGSR]

Anyone know where I can get one? Doesnt have to work. I am relocating mine, and I want to plug the hole with a junked one.

Checking the local salvage yards. But they'll probly sell me one that works...$$$


Joe

[JT98CivicEX]

I also relocated my MAP sensor. What I did is to make a piece of aluminum plate and drilled two holes for the mounting. The O-ring needs to stay on the TB for the proper sealing. See the pic below.



JT

[This message has been edited by JT98CivicEX (edited May 06, 2001).]

[falconGSR]

Cool. That would work.

I am thinking if I had 2 MAP sensors I could plot the pressure differences between the TB and the intake manifold. I am curious as to how much difference there is when you transition from vac to boost. Could shed some more insight on the tip in characteristics.

Joe

[JT98CivicEX]

The MAP sensor on the TB doesn't see boost, only vacuum. By relocating the MAP sensor to the intake manifold allows it to see boost but can also create a CEL due to the voltage reading being too high. What I did is connected the MAP sensor (intake manifold) to the J&S Safeguard v2 (per Larry), set the max output voltage to 3.0vdc. I think that's the upper limit the ECU will allow according to the manual.

JT

[falconGSR]

Yeah thats why i am going thru the trouble of relocating it.

Comparing the pressures will reveal some characteristics of the flow of these systems.

[JT98CivicEX]

I'm not sure if this is what you are looking for... I also posted the same info on ClubSi..

Here is some information for those who has a J&S v2. J&S v2 allows you to plumb the MAP sensor to the intake manifold to see boost and it provides a limiter circuit to prevent the ECU from seeing the excessive voltage. I've listed the max voltage you can set without causing a CEL and the different values based on the different voltage settings. I'm not sure how the ECU interpret the data but it seems to help eliminate the tip-in problem that most of us have. Currently, I'm not using the IAT resistor mod or TPS mod. I'm only using this MAP sensor mod, stock injectors and no tip-in problem. You will notice the effective range of this mod is only from zero vacuum to 1.5-2.0 psi of boost. I think this is the range where most people have the tip-in problem.

Here is what happens if you set the voltage too high. The car immediately goes into limbo mode and it runs like shit! Basically, it generated a CEL code3/DTC P0108.


JT